Home / 21,217.14-29,280.42-11,785.50

Finding the Fourth Proportional to 21,217.14, 29,280.42 and 11,785.50

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Solution

The fourth proportional to 21,217.14, 29,280.42 and 11,785.50 is: 16,264.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.14 : 29,280.42 = 11,785.50 : x
  2. Step 2: Convert to fraction form
    21,217.14/29,280.42 = 11,785.50/x
  3. Step 3: Cross multiply
    21,217.14x = 29,280.42 × 11,785.50
  4. Step 4: Simplify right side
    21,217.14x = 345,084,389.91
  5. Step 5: Solve for x
    x = 345,084,389.91/21,217.14
  6. Step 6: Final answer
    x = 16,264.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.